Cutter-bar construction.



A. R. CONNER.

CUTTER BAR CONSTRUCTION.

APPLICATION FILED APR.23, 1914.

1 1 34,588. Pat nted Apr. 6, 1915 2 SHEETS-SHEET 1.

with comm .A. R. CONNER.

CUTTER BAR CONSTRUCTION.

APPLICATION FILED APR.2 3. 1914.

1, 1 34,588.. Patented Apr. 6, 1915.

2 SHEETS-SHEET 2.

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an'uawbm A .R. Conner ,KAM. M 0m THE NORRIS PETERS 37-. PHOTO-7H0.WASHINGTON, D. C.

it rinrran srarasra'rsna em j AMBER a. comma, or Measure CENTER, NEWHAMPSHIRE.

CUTTER-BAR coNs'rnUcTIoN. a I

Specification of Letters Patent. Patented Apr-.6, 1915.

Application filed. April 23, 1914. Serial 110,833,954. 7 7

To all whom it may concern I Be it known that I, AMBER R. CoNNER, a

, citizen of the United States, residing at 'Meredith Center, in thecounty of Belknap and State of New Hampshire, have invented certain newand useful Improvements in lutter-Bar Construction, of-whieh thefollowing is a specification. I

Thls inventlon relates to harvesters which employ reciprocatory cutterbars which are composed of a plurality of cutting sections for cuttingthe grain or hay; and the pri- 1 mary object of the invention is theprovision of a cutter bar of this nature which has the type now in use,the cutting sections are riveted to the bar so that when one of them be-'comes broken or it is desired to interchange the cutting section, it isnecessary to take the cutter bar to a blacksmith shop or to employspecial tools for cutting the rivets for removingthe sections.

, It is the object of this invention to provide cutting sections whichhave rectangularly shaped openings formed in their marginal side edgesfor the reception of the square portion of bolts, so as to prevent theturning of the bolts, and .to employ nuts of a novel construction forbinding the cutting sections upon a cutter bar, which nuts are actedupon by the cutter-bar guard construction for preventing the looseningrotation of the nuts during the reciprocating movement of the cutterbar.

With the foregoing and other objects in view, this invention consists ofsuch novel features of construction, combination and arrangement ofparts as will be hereinafter v 1 like or corresponding partsthroughoutthe several views, and in which,

Figure 1 is a top plan view of a cutter bar constructed in accordancewith this invention, Fig. 2 is a fragmentary bottom plan view of acutter bar, Fig- 3 is a cross-sectional view on the line 3-3 of Fig. 1,Fig. 4 is a bottom plan of a fragment of the cut- .ter bar construction,showing the novel form of nut, Fig. 5 is a perspective view of a cuttingsection, and Fig. 6 is a perspective view of the bolt used for attachingthe cutting 1 sections to the bar.

Referring more particularly to the draw- 1ngs,-1 designates thesupporting bar of'the cutter barconstruction, which bar has the ordinarytype of divider board 2 connected to its outer terminal end and theprotective traction shoe 3 formed upon its inner end which is attachedto the machine in any suitable manner (not shown). The supporting bar 1has secured to its under surface a plurality of pointed guards 5, whichguards are of similar construction commonly employed -in theconstruction of cutter bars of this nature, havingthe guideway 6 formedin their outer protruding pointed ends, in which guideways are seatedthe sections 7 of the cutter bar 8..

The cutter bar 8 is constructed of a bar 9 which extends the entirelength of the supportingbar 1, and which hassecured to its upper surfacea plurality of cutting sections 7. The cutting sections 7 are providedwith rectangularly shaped cut-out portions 14,

formedin their opposite side edges, so that when lth e sections arepositioned upon the bar :9 the "rectangularly shaped cut-out portions14: will aline with the cut-out portions in the section next theretoforming a rectangular opening for the reception of rectangular lporti0ns15* formed on the bolts 16. The

bolts 16 have flat elongated heads 17 formed upon their upper terminalends,which heads abut the upper faces of the cutting sections 7, whenthe rectangular sections 15 are seated in the rectangularly shapedcut-out portions 14: for binding the cutting sections to the bar 9. Therectangular sections 15'are formed upon the bolt 16 adjacent to theinner side of their oval shaped head 17 as is clearly shown in Fig. 6 ofthe drawing. The

terminal ends of the bolts 16 areprovided with screw threads, upon whichare mounted nuts 18. The nuts 18 are of peculiar construction, beingoblong in shape and'having their corners rounded, as is clearly shown at19 in Fig. 4 of the drawing.

The guard members 5 are provided with recesses 20, which recesses aremilled or formed within the guard members adjacent the portion of thelatter which receives the bar 9, and the recesses20 are of such size asto permit of the passage of the nuts 18 therethrough, during thereciprocatory movement of the cutter bar 8, When the nuts arepositionedso that their narrowest dimension or Width is parallel With thelongitudinal line of the bar 9. In instances Where the nuts 18 Workloose upon the bolts 16, the rounded edges of the nuts Will engage theWalls of the recesses 20, Which Will cause the nuts to move into theirproper position, and prevent the loosening of the cutting sections 7upon the bar 9.

The supporting bar 1 has brackets 22 formed thereupon, Which bracketshave arms 23 extending outwardly over the cutter bar for steadying thereciprocating movement of the bar. The arms 23 are provided Withrecesses 24, so as to permit of the passage of the bolts head 17therethrough during the reciprocating movement of the cutter bar.

From the foregoing description taken in connection With the accompanyingdrawings, the advantages of the construction and of the method ofoperation of the improved cutter bar Will be readily apparent to thoseskilled in the art to Which this invention appertains, and While in theforegoing description, the principle of the operation of this inventionhas been described together with various features of construction, it isto be understood that certain minor features of construction,combination and arrangement of parts may be altered to suit practicalconditions provided such alterations are comprehended Within the scopeof What is claimed.

WVhat is claimed is 1. In a cutter bar construction, the combination, ofa supporting bar, having a plurality of guards secured thereto, a barslidably carried by said supporting bar, a plurality of cutting sectionsdetachably attached to said slidable bar by bolts, nuts mounted upon theends of said bolts for binding said sections in engagement With saidsliding bar, and means formed upon said guards for preventing theloosening rotation of said nuts upon said bolts.

2. In a cutter bar construction, a supporting bar having a plurality ofguards secured thereto, a bar slidably carried by said sup porting bar,a plurality of cutting sections having rectangularly shaped cut-outportions formed in their opposite side edges, bolts having rectangularportions formed upon their shanks for insertion into said rectangularlycut-out portions, for prevent ing the rotation of said bolts, oblongnuts mounted upon the ends of said bolts for binding said sections inengagement with said sliding bar, and means formed upon said guards forpreventing the loosening rotation of said nuts upon said bolts.

3. In a cutter bar construction, a supporting bar having a plurality ofguards secured thereto, a bar slidably carried by said supporting bar, aplurality of cutting sections having rectangularly shaped cut-outportions formed in their opposite side edges, bolts having rectangularportions formed upon their shanks for insertion into said cut-outportions, for preventing the rotation of said bolts, oblong nuts mountedupon the ends of said bolts for binding said sections in engagement Withsaid sliding bar, said guards being provided With recesses in which saidnuts are 'slidable, said nuts having their corners rounded forengagement with the Walls of said recesses for prevent ing the looseningrotation of said nuts.

In testimony whereof I afliX my signature in presence of two Witnesses.

AMBER R. CON N ER. l/Vitnesses:

E. C. DAVIS, A.'R. DERMODY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

